servletconfigimpl.java

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/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.server.dispatch;

import com.caucho.config.*;
import com.caucho.config.program.ConfigProgram;
import com.caucho.config.program.ContainerProgram;
import com.caucho.config.program.NodeBuilderProgram;
import com.caucho.config.types.InitParam;
import com.caucho.jmx.Jmx;
import com.caucho.jsp.Page;
import com.caucho.jsp.QServlet;
import com.caucho.naming.Jndi;
import com.caucho.remote.server.*;
import com.caucho.server.connection.StubServletRequest;
import com.caucho.server.connection.StubServletResponse;
import com.caucho.server.webapp.WebApp;
import com.caucho.servlet.comet.CometServlet;
import com.caucho.util.*;
import com.caucho.webbeans.component.*;
import com.caucho.webbeans.manager.*;

import javax.annotation.PostConstruct;
import javax.naming.NamingException;
import javax.servlet.*;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Configuration for a servlet.
 */
public class ServletConfigImpl implements ServletConfig, AlarmListener
{
  static L10N L = new L10N(ServletConfigImpl.class);
  protected static final Logger log
    = Logger.getLogger(ServletConfigImpl.class.getName());

  private String _location;

  private String _jndiName;
  private String _var;
  
  private String _servletName;
  private String _servletNameDefault;
  
  private String _servletClassName;
  private Class _servletClass;
  private String _jspFile;
  private String _displayName;
  private int _loadOnStartup = Integer.MIN_VALUE;

  private boolean _allowEL = true;
  private HashMap<String,String> _initParams = new HashMap<String,String>();

  private HashMap<String,String> _roleMap;

  private ContainerProgram _init;

  private RunAt _runAt;

  private ServletProtocolConfig _protocolConfig;
  private ProtocolServletFactory _protocolFactory;
  
  private Alarm _alarm;
  private ComponentImpl _comp;

  private ServletContext _servletContext;
  private ServletManager _servletManager;

  private ServletException _initException;
  private long _nextInitTime;

  private Object _servlet;
  private FilterChain _servletChain;

  /**
   * Creates a new servlet configuration object.
   */
  public ServletConfigImpl()
  {
  }

  /**
   * Sets the config location.
   */
  public void setConfigLocation(String location, int line)
  {
    _location = location + ":" + line + ": ";
  }

  /**
   * Sets the id attribute
   */
  public void setId(String id)
  {
  }

  /**
   * Sets the servlet name.
   */
  public void setServletName(String name)
  {
    _servletName = name;
  }

  /**
   * Gets the servlet name.
   */
  public String getServletName()
  {
    return _servletName;
  }

  /**
   * Sets the servlet name default when not specified
   */
  public void setServletNameDefault(String name)
  {
    _servletNameDefault = name;
  }

  /**
   * Gets the servlet name default.
   */
  public String getServletNameDefault()
  {
    return _servletNameDefault;
  }

  /**
   * Gets the servlet name.
   */
  public String getServletClassName()
  {
    return _servletClassName;
  }

  /**
   * Sets the servlet class.
   */
  public void setServletClass(String servletClassName)
  {
    _servletClassName = servletClassName;

    // JSF is special
    if ("javax.faces.webapp.FacesServlet".equals(_servletClassName)) {
      if (_loadOnStartup < 0)
	_loadOnStartup = 1;

      if (_servletContext instanceof WebApp)
	((WebApp) _servletContext).createJsp().setLoadTldOnInit(true);
    }
  }

  /**
   * Gets the servlet name.
   */
  public Class getServletClass()
  {
    if (_servletClassName == null)
      return null;
    
    if (_servletClass == null) {
      try {
	Thread thread = Thread.currentThread();
	ClassLoader loader = thread.getContextClassLoader();

        _servletClass = Class.forName(_servletClassName, false, loader);
      } catch (Exception e) {
	throw error(L.l("'{0}' is not a known servlet class.  Servlets belong in the classpath, for example WEB-INF/classes.",
			_servletClassName),
		    e);
      }
    }
      
    return _servletClass;
  }

  /**
   * Sets the JSP file
   */
  public void setJspFile(String jspFile)
  {
    _jspFile = jspFile;
  }

  /**
   * Gets the JSP file
   */
  public String getJspFile()
  {
    return _jspFile;
  }

  /**
   * Sets the allow value.
   */
  public void setAllowEL(boolean allowEL)
  {
    _allowEL = allowEL;
  }

  /**
   * Sets an init-param
   */
  public void setInitParam(String param, String value)
  {
    _initParams.put(param, value);
  }

  /**
   * Sets an init-param
   */
  public InitParam createInitParam()
  {
    InitParam initParam = new InitParam();

    initParam.setAllowEL(_allowEL);

    return initParam;
  }

  /**
   * Sets an init-param
   */
  public void setInitParam(InitParam initParam)
  {
    _initParams.putAll(initParam.getParameters());
  }

  /**
   * Gets the init params
   */
  public Map getInitParamMap()
  {
    return _initParams;
  }

  /**
   * Gets the init params
   */
  public String getInitParameter(String name)
  {
    return _initParams.get(name);
  }

  /**
   * Gets the init params
   */
  public Enumeration getInitParameterNames()
  {
    return Collections.enumeration(_initParams.keySet());
  }

  /**
   * Returns the servlet context.
   */
  public ServletContext getServletContext()
  {
    return _servletContext;
  }

  /**
   * Sets the servlet context.
   */
  public void setServletContext(ServletContext app)
  {
    _servletContext = app;
  }

  /**
   * Returns the servlet manager.
   */
  public ServletManager getServletManager()
  {
    return _servletManager;
  }

  /**
   * Sets the servlet manager.
   */
  public void setServletManager(ServletManager manager)
  {
    _servletManager = manager;
  }

  /**
   * Sets the init block
   */
  public void setInit(ContainerProgram init)
  {
    _init = init;
  }

  /**
   * Gets the init block
   */
  public ContainerProgram getInit()
  {
    return _init;
  }

  /**
   * Sets the load-on-startup
   */
  public void setLoadOnStartup(int loadOnStartup)
  {
    _loadOnStartup = loadOnStartup;
  }

  /**
   * Gets the load-on-startup value.
   */
  public int getLoadOnStartup()
  {
    if (_loadOnStartup > Integer.MIN_VALUE)
      return _loadOnStartup;
    else if (_runAt != null)
      return 0;
    else
      return Integer.MIN_VALUE;
  }

  /**
   * Creates the run-at configuration.
   */
  public RunAt createRunAt()
  {
    if (_runAt == null)
      _runAt = new RunAt();

    return _runAt;
  }

  public void setJndiName(String jndiName)
  {
    _jndiName = jndiName;
  }

  public void setVar(String var)
  {
    _var = var;
  }

  /**
   * Returns the run-at configuration.
   */
  public RunAt getRunAt()
  {
    return _runAt;
  }

  /**
   * Adds a security role reference.
   */
  public void addSecurityRoleRef(SecurityRoleRef ref)
  {
    if (_roleMap == null)
      _roleMap = new HashMap<String,String>(8);

    // server/12h2
    // server/12m0
    _roleMap.put(ref.getRoleName(), ref.getRoleLink());
  }

  /**
   * Adds a security role reference.
   */
  public HashMap<String,String> getRoleMap()
  {
    return _roleMap;
  }

  /**
   * Sets the display name
   */
  public void setDisplayName(String displayName)
  {
    _displayName = displayName;
  }

  /**
   * Gets the display name
   */
  public String getDisplayName()
  {
    return _displayName;
  }

  /**
   * Sets the description
   */
  public void setDescription(String description)
  {
  }

  /**
   * Sets the icon
   */
  public void setIcon(com.caucho.config.types.Icon icon)
  {
  }

  /**
   * Sets the web service protocol.
   */
  public void setProtocol(ServletProtocolConfig protocol)
  {
    _protocolConfig = protocol;
  }

  /**
   * Sets the init exception
   */
  public void setInitException(ServletException exn)
  {
    _initException = exn;

    _nextInitTime = Long.MAX_VALUE / 2;

    if (exn instanceof UnavailableException) {
      UnavailableException unExn = (UnavailableException) exn;

      if (! unExn.isPermanent())
        _nextInitTime = (Alarm.getCurrentTime() +
                         1000L * unExn.getUnavailableSeconds());
    }
  }

  /**
   * Returns the servlet.
   */
  public Object getServlet()
  {
    return _servlet;
  }

  /**
   * Initialize the servlet config.
   */
  @PostConstruct
  public void init()
    throws ServletException
  {
    if (_runAt != null) {
      _alarm = new Alarm(this);
    }